WorksheetsPMA 3 Practice
Total questions: 50
Worksheet time: 25mins
1. Joel's mass on Earth is 50.0 kilograms. The gravity on the Moon is approximately one-sixth the gravity on Earth. How would Joel's mass and weight be affected if they were measured on the Moon?
His mass would increase, and his weight would remain the same.
His mass and his weight would remain the same.
His mass and his weight would decrease.
His mass would remain the same, and his weight would decrease.
2. The picture below shows the rock layer in one part of the Grand Canyon.
Based on the law of superposition, what is the order of these rock layers, from oldest to youngest?
1, 2, 3, 4
2, 1, 4, 3
3, 4,1, 2
4, 3, 2, 1
3. Tigers, sponges, and whales are members of the animal kingdom. These organisms are very different but are similar in some ways. Which of the following is a characteristic used to classify these organisms as animals?
They have cell walls.
They have fur.
They eat other living organisms, therefore they are heterotrophs.
They tend to feed on decomposing organic matter.
4. The components of any biological organism can be arranged according to structural hierarchy. In human beings, the structural hierarchy can be arranged in terms of complexity. Which of the following accurately describes the structural hierarchy in a human being in order of increasing complexity?
tissue, organ, cell, organism,
organ system
organism, tissue, organ system,
organ, cell
cell, tissue, organ, organ system,
organism
organ, tissue, cell, organ system,
organism
5. Earth's surface features slowly change over time. For example, sharp, jagged mountain ranges become lower and more rounded over time. What factor/s is responsible for this change in their shape?
Weathering and erosion
Deposition
movement of continents
collisions between continental plates
6. Alexis had three pieces of gold that were the same size. She placed one in the freezer, one in boiling water, and left one at room temperature. After 30 minutes, she placed them in the beakers as shown below.
All three beakers contained 50 milliliters (mL) of water at room temperature (25oC). What is the best prediction for the outcome of the experiment?
The water temperature will initially increase in Beaker A and decrease in Beaker B before reaching the same water temperature as Beaker C.
The water temperature will initially decrease in Beaker A and increase in Beaker B before reaching the same water temperature as Beaker C.
The water temperature of Beaker A will decrease. The water temperature of Beaker B will decrease. The water temperature of Beaker C will stay the same.
The water temperature of Beaker A will increase. The water temperature of Beaker B will increase. The water temperature of Beaker C will stay the same.
7. Kayla summarizes the cell theory to her class. She states that all organisms are made up of one or more cells. Which pair of statements correctly completes her summary?
All cells come from existing cells, and all cells have the same parts.
All cells are the same size, and the cell is the basic unit of all organisms.
The cell is the basic unit of all organisms, and all cells have the same parts.
The cell is the basic unit of all organisms, and all cells come from existing cells.
8. In order to maintain homeostasis, the systems of the human body work together to keep a constant internal temperature. Which of the following best describes how the human body responds in a cold environment?
The digestive system produces more hormones to warm the body.
The nervous system signals the muscles of the muscular system to contract and warm the body.
The nervous system signals the muscles of the muscular system to contract and cool the body.
The skeletal system produces more blood cells that circulate through the blood vessels, increasing the warmth of the body.
9. Two new planets are discovered called planet X and planet Y. The planets have identical volumes, but the mass of planet X is two times greater than the mass of planet Y. If two identical space ships land on both planets, which of the following will be true?
The mass of the space ship on planet Y will be greater than the mass of the space ship on planet X.
The mass of the space ship on planet X will be greater than the mass of the space ship on planet Y.
The weight of the space ship on planet X will be greater than the weight of the space ship on planet Y.
The weight of the space ship on planet Y will be greater than the weight of the space ship on planet X.
10. The picture below shows two girls pushing on a box with equal and opposite forces.
How can the girls get the box to move to the right?
the forces on the box need to become unbalanced, with the force from the left greater than the force from the right.
the forces on the box need to become unbalanced, with the force from the right greater than the force from the left.
the forces on the box need to become balanced, with the force from the left greater than the force from the right.
the forces on the box need to become balanced, with the force from the right greater than the force from the left.
11. Ships encounter surface currents and waves as they travel across the ocean. Surface currents and waves form when energy from the sun causes tow of Earth's spheres to interact. Which two spheres interact to produce these waves and currents.
the geosphere and biosphere
the biosphere and hydrosphere
the cryosphere and atmosphere
the atmosphere and hydrosphere
12. A radio is a device that converts energy from one form to another. Which of the following best describes the energy conversion process that takes place in a radio?
Electrical energy is converted into sound only.
Electrical energy is converted into sound and heat.
Sound is created by energy stored in the speakers.
Some energy is released as sound, and the rest is destroyed.
13. Destiny took an inflated balloon and rubbed it back and forth across a wool cloth. In doing so she charged the balloon with static electricity. She then turned on the sink to have a slow steady stream of water. When she moved the charged balloon toward the stream of water, the stream of water moved away from the balloon.
Which of the following best describes the type of forces present in this scenario?
All of the forces are examples of contact forces.
All of the forces present are examples of non-contact forces.
Moving the balloon across the wool cloth is an example of a contact force and the static electricity on the balloon is an example of a non-contact force.
Moving the balloon across a wool cloth is an example of a non-contact force and the static electricity is an example of a contact force.
14. With new knowledge comes new technology. For example, since science has analyzed how light works, we have been able to manipulate light using technology such as high-powered telescopes. The high-powered telescopes have allowed us to discover more galaxies.
Which statement best describes what scientists do with information obtained through the use of new technology?
If new information is discovered that conflicts with previous knowledge, scientists simply discard it.
As new knowledge is discovered, scientists take note of it but do not change any previously established ideas.
Scientists do not seek new knowledge if there is a chance it may conflict with current ideas and understanding.
When new information is discovered, scientists accept and incorporate the new knowledge if it is determined to be factual.
15. Kayla summarizes the cell theory to her class. She states that all organisms are made up of one or more cells. Which pair of statements correctly completes her summary?
All cells come from existing cells, and all cells have the same parts.
All cells are the same size, and the cell is the basic unit of all organisms.
The cell is the basic unit of all organisms, and all cells have the same parts.
The cell is the basic unit of all organisms, and all cells come from existing cells.
16. Plant and animal cells have many similarities in structure and function, however plant cells have three organelles that animal cells do not. Which of the following identifies a process that a plant cell is able to complete due to one of the additional organelles?
Make its own food.
Make new cells and reproduce.
Ward off predatory organisms.
Generate energy for processes in the cell.
17. Science students in Alma’s class are observing prepared slides of the cells of maple tree leaves and mammal skin cells. As they study the cells under the microscope’s highest magnification, their teacher records their observations on the board. Which would be included in the teacher’s list?
Both the animal and plant cells have an oval shape and are about the same size.
Both types of cells have a membrane that is also surrounded by a cell wall.
The leaf cells have green organelles called chloroplasts; the animal cells do not.
The skin cells have a nucleus, but the cells of the leaves have no nucleus.
18. Biologists used to name an organism by adding descriptive phrases to the name of the genus. Why did Linnaeus develop a scientific name for a species composed of two Latin words?
to help identify species and prevent Latin from becoming a dead language
to help scientists keep knowledge about species within the scientific community
to prevent confusion by preventing other, competing systems of classification from developing
to provide a consistent naming system that would allow scientists all over the world to easily identify an individual species
19. The biceps are the muscles responsible for flexing the forearm. Which of the following structures falls below the biceps in the structural hierarchy that can be used to describe human beings?
organ
organism
organ system
tissue
20. Organize the electromagnetic spectrum based on decreasing wavelengths.
Radio, Microwave, Infrared, Visible Light, Ultraviolet, X-ray, Gamma
Microwave, Radio, Infrared, Visible Light, Ultraviolet, X-ray, Gamma
Gamma, X-ray, Ultraviolet, Visible Light, Infrared, Microwave, Radio
X-ray, Gamma, Visible Light, Microwave, Radio, Ultraviolet, Infrared
21. Breezes are caused by land heating up and cooling down faster than water, forming a pressure difference.
When a land breeze forms, where in the diagram above would an area of high pressure be found?
An area of high pressure is found over the land where the cold air begins to sink.
An area of high pressure occurs over the ocean where the warm air begins to rise.
An area of high pressure is found just above the land where the cold air sinks and in the air above the ocean where the rising warm air cools.
An area of high pressure is found just above the ocean where the warm air begins to rise and in the air above the land where the cold air is sinking.
Label the models as heliocentric or geocentric.
Model A is geocentric because the planets are shown orbiting the sun. The prefix geo means Sun.
Model A is geocentric because the planets are shown orbiting the Earth. The prefix geo means Earth.
Model B is heliocentric because the planets are shown orbiting the Earth. The prefix helio means Earth.
Model A and B are both geocentric because the planets are orbiting a large object. The prefix geo means large object.
23. Why doesn't sound travel through a vacuum?
Sound needs a medium, and there is no matter in a vacuum
Vacuums absorb most of the sound
It travels in space, like in Star Trek
It does not travel in water
24. Why is it important to replicate scientific investigations?
because replication allows scientists to get the results that match their theories
because replication shows scientists how to focus on planning future experiments
because replication allows other scientists to add their personal touch to an experiment
because replication is how the scientific community makes sure data is accurate and reliable
25. Cells may have different shapes and different amount of organelles, depending on their function. Which features do plant cells have that animal cells lack?
Chloroplast, ribosome, and cell wall
Golgi apparatus, cytoskeleton, and vesicle
Cell wall, chloroplast, and central vacuole
Central vacuole, chloroplast, and smooth ER
26. Which of the following correctly compares mutualism and commensalism?
In a mutualistic relationship only one organism benefits, but in commensalism neither organism benefits.
A mutualistic relationship harms both organisms, in a commensalism relationship one organism benefits .
In both commensalism and mutualism none of the organisms are harmed.
In both commensalism and mutualism one of the organisms is not affected.
27. Bees feed on nectar in flowers. To reach the nectar, a bee must fly deep inside the
flower. Inside the flower are pollen grains that are produced by the flower's male
reproductive organs. The pollen sticks to the furry parts of the bee's body, and the bee
transports the pollen as it visits other flowers, allowing the other flowers to be fertilized.
Which of these relationships best describes the interaction between the bee and the
flower?
predation
parasitism
mutualism
commensalism
28. Which of following statements correctly describes the difference between scientific theory and law?
A theory implies that something has been proven and is generally accepted as being true; a law is a statement of fact about an action or set of actions.
A theory is an educated guess; a law can never be true.
A theory cannot be falsifiable; a law cannot be proven.
A theory has been proven once; a law does require evidence to support its claim.
29. A substance contains an arrangement of different types of atoms joined together by chemical bonds. Which of the following classes of substances could this describe?
all matter
all elements
all compounds
all pure substances
30. Alison finds the total mass of a sample of baking soda, a balloon, and a glass container with vinegar in it. She adds the baking soda to the vinegar and immediately places the balloon over the mouth of the container. After the reaction is complete, she again finds the total mass of the system. Which statements true about this investigation?
The mass changes because there was a chemical change that occurred.
Mass is lost during the reaction because a chemical change is taking place.
Mass is gained during the reaction because a chemical change is taking place.
The mass does not change because chemical changes observes the law of conservation of mass.
31. The graph below show a plant's growth over a 40-day period.
At what point in the graph did the plant reach maturity and stop growing?
Day 12
Day 20
Day 28
Day 35
32. In a certain species of parrots, having yellow feathers is a dominant trait. Having green feathers is a recessive trait. A homozygous yellow parrot is crossed with a homozygous green parrot. If the female parrot lays four fertile eggs, what will be the phenotypes of the offspring?
all green
all yellow
two yellow and two green
three green and one yellow
33. The pedigree below is tracing the expression of a recessive trait for generations I & II. Both parents carry the trait but only one presents the trait.
Based on the information shown in the pedigree, what is the genotype for individual I-1?
heterozygous
homozygous recessive
homozygous dominant
heterozygous recessive
34. Which processes identify the bending and breaking of rocks?
fold (bending) ,fault (breaking)
deformation (bending), tension (breaking)
fault (bending) , fold (breaking)
fold (bending), epicenter (breaking)
35. Sucrose is another name for table sugar. Sucrose is a compound made from the elements carbon, hydrogen, and oxygen. Which statement best describes the properties of sucrose?
They are exactly like the properties of carbon.
They are exactly like the properties of oxygen.
They are exactly like the properties of hydrogen.
They are different from the properties of all the elements sucrose contains.
36. Carmen conducted an experiment to determine if listening to different types of music would affect a person’s pulse. Her hypothesis was that the pulse rate would change with different types of music. Each person listened to seven different selections of music for 30 seconds each. Each person’s pulse was taken before the music and then after each 30-second interval of music. The pulses were taken again after the music selections were completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person listened to different types of music.
Would the addition of a control group add to the validity of this experiment?
A control group would make the independent variable more reliable.
A control group would minimize the effects of other factors besides the dependent variable.
A control group would minimize the effects of other factors besides the independent variable.
A control group would compare the variables to maximize the effects of other variables besides the dependent variable.
37. Sierra examined several photos of stars. To compare their temperatures, he looked at the colors of the stars. He organized the photos in order from coolest to hottest. Which of these answers shows the correct order?
blue, white, yellow, red
white, red, blue, yellow
red, yellow, white, blue
yellow, blue, red, white
38. The element silver has both physical and chemical properties, some of which do not change when the size of the sample changes. Which of these choices is a physical property that does not change when the size of the sample changes?
Flammability
Density
Volume
Reactivity with oxygen
39. Lewis has two spheres made of different substances. Sphere A has a volume of 19.4 cubic centimeters and a mass of 24.0 grams. Sphere B has a volume of 17.0 cubic centimeters and a mass of 13.6 grams. Lewis knows that the density of water is 1.0 grams/cubic centimeter. If Lewis places both substances in a tub of water, which one will float?
Be aware that the density equation is d = m/v, with d being density, m being mass, and v being volume.
Sphere B will float, because it is less dense than water.
Sphere B will float, because it has less mass than Sphere A.
Sphere A will float, because it is more mass than water.
Sphere A will float, because it is less dense than Sphere B.
40. Tyler performed an experiment where he combined Hydrochloric Acid (HCl) and Aluminum (Al). After the substances were mixed they became hotter and produced tiny bubbles of gas. Afterwards he was left with Aluminum Chloride (AlCl3) and Hydrogen gas (H2). Which statement best explains what kind of change occurred?
There was a physical change because there was a change in state.
There was a chemical change because there was a change of mass.
There was a physical change because there was heat and a gas produced.
There was a chemical change because two new substances formed by re-combining the particles of the old substances.
41. A swimming team needs to choose new swimsuits and they have three different suits to choose from. Each suit is made of a different material. The team decides to do an experiment to determine which material will dry faster. The table below shows the different experimental designs the swimmers came up with.
Whose experimental design will provide the team with the most accurate data for which suit will dry faster?
Jose
Alyssa
Jayden
Brandon
42. Matter can undergo physical and chemical changes. A physical change is a change of matter from one form to another without a change in the identity of the substance. Which process is an example of a physical change?
ice melting
milk souring
metal rusting
wood burning
43. A student conducted an investigation to determine the effect of various environmental factors on the rate of water loss in plants. The student prepared four groups of plants (A, B, C, and D). Each group contained 10 plants of the same species and leaf area. Each group was exposed to different environmental factors. The water loss of each plant was measured over time in 10-minute intervals for a total of 30 minutes. The experimental results appear in the data table below.
Which group of plants formed the control group for the experiment?
A
B
C
D
44. Eclipses are predictable, solar system events. The answer choices below list relative positions of Earth, the sun, and the moon. Which list represents the position of Earth, the sun, and the moon during a lunar eclipse?
sun, Earth, moon
Earth, sun, moon
sun, moon, Earth
moon, sun, Earth
45. High and low tides are the regular pattern of rising and sinking ocean water levels. They are caused when the Sun's gravity and the Moon's gravity pull on ocean water. The Moon's gravity has a greater effect on Earth's oceans than the Sun's gravity. Why would the moon have a greater effect than the Sun?
The Moon is not as hot as the Sun
The Moon has less mass than the Earth
The Moon has less mass than the Sun
The Moon is closer to the Earth than the Sun
46. The diagram below shows the relative positions of Earth, the moon, and the sun. The moon is shown at four possible positions around Earth.
Which position of the moon could result in a solar eclipse?
1
2
3
4
47. Which of the following statements is most accurate?
The amount of carbon on Earth cycles, gradually increasing as it moves up the food chain, and decreasing until the next phase of the cycle.
Carbon flows through the food chain as animals eat it, then decomposes and is permanently removed from the system when the food chain is complete.
The amount of carbon on Earth is limited, and it moves through living and nonliving materials through the carbon cycle.
Carbon flows through Earth's atmosphere when animals exhale, then moves into space where its amount steadily increases, and finally moves back into Earth's atmosphere to be used again
This is a graph of constant speed. What can you infer about the green line and the red line?
The object represented by the red line is moving faster than the object represented by the green line.
The object represented by the green line is moving faster than the object represented by the red line.
The object represented by the green line is moving slower than the object represented by the red line.
The objects represented by the two lines are moving at the same constant speed.
49. The data table below shows the number of people who lived in Greenwood in 4 consecutive years. Which conclusion can be drawn from the data table?
The population of Greenwood is increasing over time
The population of Greenwood is not changing over time.
About four more people are living in Greenwood each year.
Fewer people are living in Greenwood now than in the past.
50. Lindsey wanted to determine how the temperature of the water in her pool changed throughout the year. She took measurements and made the following graph.
In her investigation, what was the test (independent) variable and what was the outcome (dependent) variable?
Her test (independent) variable is the time of year. Her outcome (dependent) variable is the temperature of the water.
Her outcome (dependent)variable is the time of year. Her test (independent) variable is the temperature of the water.
The test (independent) is the time of day, the outcome (dependent) variable is the time of year.
The outcome (dependent) variable is the temperature of the water, the test (independent) is the temperature of the air.
